Instrument for the teaching and practice of telegraphy.



BEST AVAILABLE COP No. 773,374. PATBNTED OCT. 25, 1904.

. C. E. GHINNOCK.

INSTRUMENT FOR THE TEACHING AND PRACTICE OF TBLBGRAPHY.

APPLICATION FILED JAN. 20. 1902.

3 SHEETS-SHEET 1.

"no 110mm.

WITNESSES: q

A i; '"f

INSTRUMENT FOR THE TE BEST AVNLABLE PATBNTED OCT. 25, 1904. o. B.GHINNOGK. AGEING AND PRACTICE OF TBLEGRAPHY.

APPLICATION I'ILBD J11. 20. 1902.

, N0 MODEL.

8 SHEETS-SHEET 2.

' H15 ATTORNEYS BEST'AVAIL/QBLE COP" PA TENTED OCT. 25

G. E. CHINNOGK. INSTRUMENT Folk-THE TEACHING AND PRACTICE OF TELEGRAPHY.

APPLICATION FILED JAN. 20. 1902.

H0 MODEL.

*tion on the line 8 8 of Fig. 1.

ees A\/ mutate cos UNITED STATES Patented October 25, 1904 PATENTOFFICE.

INSTRUMENT FOR THE TEACHIN G AND PRACTICE OF TELEGRAPHY- SPECIFICATIONforming. part of Letters Patent No. 773,374, dated October 25, 1904.Application filed January 20, 1902. Serial No. 90,429. (No model.)

State of New York, have invented a new and useful Improvement in.Instruments for the Teaching and Practice of Telegraphy, of which thefollowing is a specification.

1 will describe an instrument embodying my improvement and thenpointout'tlie novel'fear" tures in claims. i

In the accompanying drawings, Figure 1 is.

a top view of an instrument embodying my improvement. Fig. 2 is anelevation of one side of the same. Fig. 3 is an elevation of the otherside of the same. Fig. 4 is an elevation of certain parts at the planeof the dotted line L 4, Fig. 1. Fig. 4* is an inverted plan of the diskactuating gears. Fig. 5 is an inverted plan of the star-wheel and pinionof Fig. 4.j Fig. 6 is a top view of a telegraphic sounder'to be used inconnection with my instrument. Fig. -7 is a view in elevation, partly insection, on the line 7 7 of Fig. 1. Fig. 8 is a sectional eleva- Similarletters of reference designate corresponding parts in all the figures.

A designates a numberof disks; preferably made of metal and securedtogether one above" the other upon a tubular shaft B',"rising from acollar C, and made of such form that it will protrude above theuppermost disk A; so that it may be engaged with a device for holding"the disks in place. As shown, its protruding portion is externallyscrew-threaded and has engaged with it a nut D. The tubular shaft Bsurrounds a stationary stud B', 'and the collar O rests upon a hub orcylinder B which rises from a metal base-plate N. Preferably a disk Ewill be loosely slipped onto the tubular shaft before applying the nutto the latter.

With the disks is combined a gear-wheel F. As here shown, it is afiixedto the collar 0, and hence it transmits rotary motion to the disks A.This gear-wheel engages with either one of two small gear-wheels G G(see Figs. 4: and 8,) mounted up'on studs or screws fastened to a collarg at the lower end of a sleeve G. The upper end of the sleeve G isprovided with a collar G and from this extends an arm g by which thesleeve may be oscillated to bring either of the gear-wheels Gr G intoengagement with the gear-wheel F. The sleeve Gris supported in a bracketH, rising from the baseplate N. A pinion 1, arrangedat the end ofia-shaft l',fwhich passes through and is supported by the sleeve G, sothat it will be ;free to rotate independently of said sleeve, isinengagement with the gear-wheel Gr, as shown inFigQ PQ In Fig. 8 thewheels Gr Gr are partly broken away to show the pinion l behind? Theshaft 1' while rotating constantly in one direction will be capable ofrotating the disks A in reverse directions, according to which of thetwo gear-wheels G G is put into engagement with the gear-wheel F byoscillating the sleeve G by turning the arm to the right or to the left.The upper end of the shaft 1 has affixed to it a pulley J which willpreferably be provided witha hand-crank j. A belt K passes around thispulley and also around a pulley L, which is comprised inan-electromagnetic generator L. V

The several disks A are externally provided with projectionscorresponding to letters of the Morse alphabet. Opposite them is anelectric circuit-breaker M, which is supported so that it may beadjusted vertically to a position opposite any one of the disks. It hasa main part m and a relatively movable part m. The latter ha's atendencyto move outwardly away from'the former and is provided with aprojection'm which will coact with the projections on the opposite diskA in such manner that as each projection passes it that projection willpress the movable part m of the 'circuit breaker against the other part,m, of the circuit-breaker and hold it there for a period correspondingwith the length of the projection. The tendency'of the relativelymovable part m of the circuit-breaker to outward movement may be variedby means of a screw m impinging against it and engaging with a tappedhole in the main part m. The free end of the relatively movable part m.of the circuit-breaker coacts with a contact-point m, which extendsthrough the main-part m of the circuit-breaker. It is, however,insulated from the part on of the"circuit-breaker. This contact-point ismade in the form of a screw and passes through a hole in the main part mof the circuit-breaker without touching the latter. A block ofinsulating material m is fastened to the main part we of thecircuit-breaker adjacent to the said hole and to this block ofinsulating material a metal piece m is fastened. The screw m engageswith a tapped holein this metal piece m. It may be therefore adjustedtoward and from the movable part on of-the circuit-breaker.

A nut m is combined with the'screw toclamp it in position.

The main part m of the circuit-breaker is secured to the lower end of ametal carrier m which fits loosely upon a metal rod m, so'as to be freeto slide vertically upon the same. The metal piece m extends into thegrooven of a metal post m rising from the base-plate N, in which groovesaid piece m slides freely up and down. A spring m, fastened to one sideof the metal piece m, bears against one part of the groove, so as toinsure electrical contact with the post m This metal post m is insulatedfrom the base-plate N.- At

. the top of the carrier m is a metal gross-bar m, preferabl y providedon its under side w ith an antifriction roller or ball m, which bearsupon the top of a metal cam O, affixed to a metal shaft 0, also having ametal gear-wheel O affixed to it and mounted to turn freely upon a metalstud O supported by a metal post O, extending upwardlyfrom the baseplateN.

The cam O raises the circuit-breaker M and permits it to be lowered bygravity. gear-wheel O engages with a pinion Oiaflixed to a shaftO",rotating freely about a stud 0 The" wire, such as German silver) andwhich is connected-at one end by a wire p with the binding-post 12According to the position of the switch-arm 19 upon the coil 3) so willvary the amount of wire 1) in circuit.

R designates a battery one pole of which is connected by a Wire to abinding-post 1-. The electric circuit from the latter is extended by aWirer to the post m The other pole of the battery R is connected by awire 1' with a binding-post *1" of a telegraphic sounder S and key T.The other binding-post, 7"", of the telegraphic sounder is connected bya wire with the key T and by Wire 2' with a binding-post 7 The circuitfrom the latter is extended by a 'wire 1' to the base-plate N, withwhich the circuit-interrupting disks A are in electrical connection.

Not only may the speed of the rotation of the disks A be varied bymanipulations of the switch-lever p and the direction of their rotationbe reversed by manipulations of the arm fand messages be changed by themeans described for altering the relation between the circuit-changerand the different disks A,

but the disks themselves may be rotated by hand relatively to eachother, so as to adjust them in different relations in order that whenthe circuit-changer ceases to operate with one and begins to operatewith another it may bethe disks may also be turned upside down andsubsequently adjusted into relation with each fastened to the postO.This stud Ocon the tubular shaft B or other suitable means stitutes thesupport for the metal rod m 'The shaft 0 has afiixed to it a pin-Wheelorstar- Wheel 0*, with which coacts an arm G, extending from the collar0. so that for every rotation of the disks A the star wheel Q will berotated sufficiently to 'eause the cam O to adjust the circuit-breaker Mvertically from a position opposite one of the disks to a positionopposite one of the others.

P designates a battery one pole of which is connected with abinding-postp and the other pole of which is connected to thebindingpost p upon a board Q, forming the base: piecefortheelectromagnetic generator L.

.This base-piece Q, is mounted upon a basepiece Q and the latter has thebase-plate N arranged upon it. A screw and nut Qf'se cure thebase-pieces Q and Q together. In the base-piece Q, is a slot throughwhich the screw passes, and this slot extends in such direction as toprovide for adjusting the basepiece Q relatively tothe base-piece Q forthe purpose of tightening or loosening the belt K. From the binding-postp a wire p extends the circuit to one brush'of the electromagneticgenerator L. The other brush of that motor is in electricalcommunication with a wire 19*, which extendsto aswiteh-arm 29 which maybe moved over a resistance de- "vice, (here shown as consisting of a001119 of f for firmly securing the disks in fixed relation ito'ea'chother.

The operation of the instrument may be briefly described as follows: Theproper electrical connectionsbeing established, the operator shifts thepinionsGr Gr for proper engagement with the large gear-wheel F accord-{ing to the'direction of rotation to be imparthand-wheel J is nowturned, with the result that the disks are rotated around the shaft B,causing the projections on the edge of one of t the disks to cooperatewith the circuit-breaker M, and thus sound one at a time the charactersfor which the projections stand and pro ducing thereby a telegraphicmessage.' As the projections on one of the disks run out the arm C"comes in contact with the starwheel'O which through the medium of thepinions and gear-wheel O O operates the cam O, which cam, acting on theroller m shifts the'circuit-breaker to the next disk forv cooperationwith the projections thereon to produce telegraphic sounds upon thecontinued rotation of the hand-wheel J in the same manner as before.What I claim as new, and desire to secure by Letters Patent, is

1. In an instrument for the teaching and practice of telegraphy, thecombination with 'gin'atadifi erent point upon the other, and

othei'by means of the nut D coacting with ed to the group of disks A.The pulley or' essr AvAaAsLe cosa number of detachable parts arranged inany desired order side to side and provided on edges with projectionsfor producing a tele graphic message, and means for moving said parts inthe direction of the length of said edges continuously throughout theseries, of a circuit-breaker constructed to coact with one of said partsat a time, and means for producing a relative movement between saidparts and circuit-breaker so that any one of the parts may coact withthe circuit-breaker.

2. In an instrument for the teaching and practice of telegraphy, thecombinationwith a number of detachable parts arranged in any desiredorder side to side and provided on edges with projections for producinga telegraphic message, and means for moving said parts in the directionof the length of said edges continuously throughout the series at anyspeed, of a circuit-breaker constructed to coact with .one of said partsat a time, and means for producing a relative movement between saidparts and circuit-breaker so that any one of the parts may coact withthe circuit-breaker.

3. In an instrument for the teaching and practice of telegraphy, thecombination with a number of parts arranged in any desired order side toside and provided on edges with projections for. producing a telegraphicmessage, and means for moving said parts in the direction of the lengthof said edgescontinuously throughout the series in reverse directions,of a circuit-breaker constructed tocoact' with one of said parts at atime, and means for producing a relative movement between said parts andcircuit-breaker so that any one of the parts may coact with thecircuit-breaker;

4:. In an instrument for. the teaching and practice of telegraphy, thecombination with a number of parts arranged side to side and provided onedges with projectigns for producing a telegraphic message, and meansfor moving said parts in the direction of the length of said edges atany speed, in reverse directions, of a circuit-breaker constructed tocoact with one of said parts at a time, and means for producingarelative movement between said parts and circult-breaker so that anyone of the parts may coact with the circuit-breaker. V

r 5. In an instrument for the teaching and practice of telegraphy, thecombination with BEST AVAlLABLE COP" practice of telegraphy, thecombination with a number-of disks arranged side to side and providedperipherally with projections for producing a telegraphic message andmeans for moving the disks in their own planes and about an axis, of acircuit-breaker constructed to coact with one of said disks at a time,and to engage the several disks in succession and automaticallythroughout the series, and means for producing a relative movementbetween the disks and circuit-breaker so that any one of the disks maycoact with the circuit-breaker.

7. In an instrument for the teaching and practice of telegraphy, thecombination with a number of parts, arranged side to side and providedon edges with projections for producing a telegraphic message and 'meansfor moving said parts in the direction of the length of said edges, of acircuit-breaker constructed to coact with one of said parts at a time,and means comprising an arm moving with said parts, a star-wheeloperated by said arm, once for each movement of said parts, and a camoperated by said star-wheel to produce a relative movement between saidparts and circuit-breaker so that any one of the parts may coact withthe circuit-breaker.

8. In an instrument for the teaching and practice of tele-graphy, thecombination with a number of parts arranged side to side and provided'onedges with'projections for producing a telegraphic messTgejmeans forsupporting them in such position that they may be adjusted to haveparts-,of the length of one opposite different parts of the length ofanother, and means for moving said parts in the direction of the lengthof said edges, of a circuit-breaker constructed to coact with one ofsaid parts at a time, and-means for producing a relativemovement betweensaid parts and may coact with the circuit-breaker.

9. In an instrument'for the teaching and practice of telegraphy, thecombination with a number of parts arranged side to side and provided onedges with projections for producing a telegraphic message', means forsupporting them so that one may be turned upside down to rearrange it inrelation with another, and means for moving said parts in scribingwitnesses! CHARLES E. CH INNOCK.

circuit-breaker so that any one of the parts V

